Loose-leaf binder



Oct. 25, 1927.

1,646,697 E. A. KOELLING, JR

LOOSE LEAF BINDER Filed May 21, 1926 y i] Pa ented-Oct. 2

' EDWARD A, KonLIiInG, JR;fer en -moths;

QQ M I 3m Application filed May 21,

This invention relates to loose leaf binders of the type in whichparallel leaf-holdingmembers such as bars are employed in con-.-

junction "with the means for adjusting the .5 bars relatively to eachother in order, to vary thespacebetweenthe same, together with means forholding the bars inlth'eir adjusted positions after the desiredadjustment has been secured.

' The primary object of the invention is to substantially improve andsimplifythe looking. means that is carried by one. 01": theharsfor'cooperation with the usual pins of the other bar in order. that thebars may be moved. inwardly together but prevented from a-reversemovement under tension of the-means therebetwee'n, meansyot' course,being provided vvhereby the'bars maybe moved in said reversedirectionwhen desired 2 .to remove Or -insert further sheets.

Other objects will become apparent as the nature of the invention isbetter understood by a considerationof the following-specification inaccompaniment with the drawing 'forming 'a' part of the application, and

locking levers and a complementary block to which the same is pivotallysecured.

My improved loose leaf binder-consists of v a pair of substantiallyparallel bars 5 and. 6 ofany desirable length,andrpret'erablyconystructed of metal tubing, substantially rectangularin cross section.

The lower bar 6 is provided with the usual vertically extending spacedposts 7 -7 for extension through openings 8-8 'inthe top bar 5, topermit the bar 5 to be adjusted lengthwise of said posts and in thismanner to accommodate any sheets which may be held clamped between 1 thebars5 and 6.

The uppermost bar 5 carries a mechanism for'preventing the movement ofhills bar away from the lower bar'6, when sheets are clampedtherebetween, as well as means for releasing said mechanism when it isdedesired number of frictionally engage the upper edges of the 1926.Serial li i'io,7.1i. 3 v

sired to accoml lish sucli a inoveriient a i barswith respect to 1 each;0ther,isaid mecha-' nism being soconstructed as tojpermit ,olown-"- wardmovement ofthe top bar'5 with re.-. 7 spectto thelower bar 6 when such a'lnove-fio" mechanism. I

mentisedesired withoutithe. releasing otsaid, v

The mecha nism above mentioned (consists; 1n the provisionof a pairofyleversz9' and-10 that are. pivotally {secured as'atwQG'andIO.

within the slots -11 of blocks- 11 11 ,a-rrangedfwithinthe:uppermostbar, 5 lat the; openings 88, said blocks."be'ingformed,centrally, with openings i 11" that register with theopenings-intheupperbar as clearly, f I

disclosed in Figure- The slots of -the" blockscommunioate with thefop'eningsgand each ot'the levers' is formed at its inner end}with.a'-knife-edge nose 12 that-iwill at all times project slightlyinto. its respective fblock ope'ning 11,,"';:for biting engagement. 1

with the corresponding post for preventlng the upward'movement oi thetop bar 5 upon the posts.

The tail portions of the levers 9 and 10 8O v carry band springs 13-13,the free ends of which are slightly curved for engagement 1 with thebottom wallet the tube 5 for normally so swinging the levers upon theirpiv-H 1 ots 9, and 10 as to maintain the knife-edge s f noses of thelevers within the openings 8-8 in the bar 5, for engagement with theposts 77, said springs obviously allowing the? levers to-be reverselyswung upon their piv-' ots in order that the bar 5 may be forcibly itmoved downwardlyat all time.

The upper and lower edges of the tail portions of the levers areinclined upwardly from their ends to allow the same to swing in reversedirectionsupon theirpivotjs while '95 the opposite edges of thenoseportions are inclined, as shown, for the same purpose. I v

Slidably disposed within the. upper bar member 5 between the levers 9and10'and' in close contact with'the-under side ofthe top o wall of'saidbar, is a longitudinally eXtendf ing metallic strip 14 that is providedintermediate its end with a lug 15 that extends upwardlythrough a-slot16 in the top wall of said bar 5 and upon'which is mounted an operating.button17 in order "that said strip may be slidinioppositedirections.The opposite ends of this strip 14 are provided with downwardly curvedportions 1818 that lioi ; tail portions of said levers 9'and 10. The

upper edge of the lever 10 is provided with posed, it. being obviousthatwhen the strip '14 is moved in a directiontoward the left,

p air or parallel bar members, posts carried thru the medium of thebutton 17 the curved ends of said strip will so engage the tail portionsof the levers as to swing the same downwardly upon their pivots 'inorder to extend or move the knife-edge noses of the levers out of theopenings 8--8 and 'conse quently allow the upward movement of the bar 5upon the posts 7-7. The levers will be maintained in such a=positionthru the medium of the curved ends of the strips iuntil said strip isforcibly moved in the opposite directiom at which time the springs13+-13 will forcibly swing the levers in a reverse direction upon theirpivots for again bringing the knife-edge noses of the levers into theopenings 8i8, which is the locking position of the same.

The detailed features of construction and operation of my invention willbe understood by those skilled in the art and even though I have hereindisclosed and described the most preferred embodiment of the inventionwith which I am at this time cognizant, it is nevertheless to beunderstood that minor changes may be made without departing from thespirit and scope of the appended claim. v e

' Having thus described my invention, What I claim as new and desire tosecure by Letters-Patent is:

In a file binder of the class described, a

by one of said members for sliding engagement with openlngs'in the otherbar'member,

pivoted levers mounted in said other bar I member and having knife edges.at their outer ends for projecting into the openings of said otherbarmember and for biting )osts a slidablebar mounted in said other barmember and having its opposite ends oliset said levers having inclinededges one.

gage the inclined edges of the 'levers'so that one oilset end may restin the notch, whereby when the slidable bar is slid in one direction oneoffset endmoves up the inclined.

of which is provided with a notch, and the oflset edges of the slide baradapted to en-' edge of one lever and the other off-sell end out of thenotch of tlieother lever thereby swinging said levers to release themfrom biting engagement with the posts.

In testimony whereof I affix my signature ED'WARD A. KOELLING; JR.

